TS EAMCET 20-July-2022 Shift 1 Solved Paper

Section: Mathematics

Question : 52 of 160

Marks: +1, -0

Let P and Q be two external points of the circle S≡x2+y2−a2=0. Let the chord of contact of the point P with respect to the circle S=0 pass through Q. If l1 and l2 are the lengths of the tangents drawn from P and Q to the circle S=0, then PQ=

√l1+l2
‌
l1+l2
2
√l12+l22
√l12−2l1+l22−2l2

Validate

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